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NITED STATES FFICEG COVERING FOR STEAM-PIPES.

QPECIFIGATIQN forming part of Letters Patent No. 350,941, dated October 19, 1886.

A pplieatinn filed July 20, [886.

To aZZ whom it may concern.-

Be it known that I, PATRICK J. MURPHY, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented a new and useful Composition of Matter to be Used for Covering Steam-Pipes to Prevent the Radiation of Heat therefrom, of which the following is a specification.

My said composition of matter consists of the followingingredients,combined in the manner stated, viz: first, sifted ashes from wood or coal, and from which all substances foreign thereto have been separated; second, ordinary glucose; third, water. These ingredients are to be mixed together in the proportions hereinafter stated, with such variations therefrom, as described, as may be required by the circumstances under which the composition may be use(l-viz., one pound of glucose to one bushel of fine sifted ashes. thoroughly mixed or stirred together, with sufiicient water to make the composition of the consistency required. These proportions will be suitable for ordinary use; but the quantity of glucose may be increased or diminished relatively to the measure of sifted ashes used, as above stated, as the places within which the pipes to be coated are situated or the circumstances under which the composition is to be applied may render it necessary.

The application of this composition to steampipes may be made by suitable brushes or by a trowel or other appropriate tool. It should be applied in layers, say, of one-quarter inch in thickness, and each layer allowed to dry or These layhardcn before the next is applied.

ers may be continuously increased in number until the sheathing of the pipes thereby ob tained has become as thick as desired. covering for steam-pipes, so prepared and ap plied as aforesaid, will prove a most perfect non-conductor of heat, and with common care will last for many years. Its co nstitucnt parts This 40 are cheap and easily combined, and the compo- 5 sition may be easily applied to any pipes by any ordinary workman.

1 am aware that a covering for steam-pipes has heretofore been made of glue, ashes, fiber,

sawdust, plaster-ofiparis, and air-slaked lime; 50

ency for application I produce a compound 60 which will dry in a reasonably short time, and which, when'dry, will be tough and tenacious.

I claim as new and desire to secure by Letters Patent The herein-described composition of matter 6 to be used for covering steanrpipes to prevent the radiation of heat therefrom, consisting of water, glucose, and fine sifted ashes, in the proportions and compounded and applied substantially as hcreinbel'orc specified.

PATRICK J. MURPHY. \V it nesscs:

THOs. 1. Bannnmnnn, JosnrH H. PAINE. 

